<!DOCTYPE html>
<html>
<!-- Created by GNU Texinfo 7.1.1, https://www.gnu.org/software/texinfo/ -->
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<!-- This file documents the use of the GNU compilers.

Copyright © 1988-2023 Free Software Foundation, Inc.

Permission is granted to copy, distribute and/or modify this document
under the terms of the GNU Free Documentation License, Version 1.3 or
any later version published by the Free Software Foundation; with the
Invariant Sections being "Funding Free Software", the Front-Cover
Texts being (a) (see below), and with the Back-Cover Texts being (b)
(see below).  A copy of the license is included in the section entitled
"GNU Free Documentation License".

(a) The FSF's Front-Cover Text is:

A GNU Manual

(b) The FSF's Back-Cover Text is:

You have freedom to copy and modify this GNU Manual, like GNU
     software.  Copies published by the Free Software Foundation raise
     funds for GNU development. -->
<title>MIPS SIMD Architecture (MSA) Support (Using the GNU Compiler Collection (GCC))</title>

<meta name="description" content="MIPS SIMD Architecture (MSA) Support (Using the GNU Compiler Collection (GCC))">
<meta name="keywords" content="MIPS SIMD Architecture (MSA) Support (Using the GNU Compiler Collection (GCC))">
<meta name="resource-type" content="document">
<meta name="distribution" content="global">
<meta name="Generator" content="makeinfo">
<meta name="viewport" content="width=device-width,initial-scale=1">

<link href="index.html" rel="start" title="Top">
<link href="Indices.html" rel="index" title="Indices">
<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
<link href="Target-Builtins.html" rel="up" title="Target Builtins">
<link href="Other-MIPS-Built_002din-Functions.html" rel="next" title="Other MIPS Built-in Functions">
<link href="MIPS-Loongson-Built_002din-Functions.html" rel="prev" title="MIPS Loongson Built-in Functions">
<style type="text/css">
<!--
a.copiable-link {visibility: hidden; text-decoration: none; line-height: 0em}
div.example {margin-left: 3.2em}
kbd.key {font-style: normal}
span:hover a.copiable-link {visibility: visible}
ul.mark-bullet {list-style-type: disc}
-->
</style>


</head>

<body lang="en_US">
<div class="subsection-level-extent" id="MIPS-SIMD-Architecture-_0028MSA_0029-Support">
<div class="nav-panel">
<p>
Next: <a href="Other-MIPS-Built_002din-Functions.html" accesskey="n" rel="next">Other MIPS Built-in Functions</a>, Previous: <a href="MIPS-Loongson-Built_002din-Functions.html" accesskey="p" rel="prev">MIPS Loongson Built-in Functions</a>, Up: <a href="Target-Builtins.html" accesskey="u" rel="up">Built-in Functions Specific to Particular Target Machines</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Indices.html" title="Index" rel="index">Index</a>]</p>
</div>
<hr>
<h4 class="subsection" id="MIPS-SIMD-Architecture-_0028MSA_0029-Support-1"><span>6.60.18 MIPS SIMD Architecture (MSA) Support<a class="copiable-link" href="#MIPS-SIMD-Architecture-_0028MSA_0029-Support-1"> &para;</a></span></h4>


<p>GCC provides intrinsics to access the SIMD instructions provided by the
MSA MIPS SIMD Architecture.  The interface is made available by including
<code class="code">&lt;msa.h&gt;</code> and using <samp class="option">-mmsa -mhard-float -mfp64 -mnan=2008</samp>.
For each <code class="code">__builtin_msa_*</code>, there is a shortened name of the intrinsic,
<code class="code">__msa_*</code>.
</p>
<p>MSA implements 128-bit wide vector registers, operating on 8-, 16-, 32- and
64-bit integer, 16- and 32-bit fixed-point, or 32- and 64-bit floating point
data elements.  The following vectors typedefs are included in <code class="code">msa.h</code>:
</p><ul class="itemize mark-bullet">
<li><code class="code">v16i8</code>, a vector of sixteen signed 8-bit integers;
</li><li><code class="code">v16u8</code>, a vector of sixteen unsigned 8-bit integers;
</li><li><code class="code">v8i16</code>, a vector of eight signed 16-bit integers;
</li><li><code class="code">v8u16</code>, a vector of eight unsigned 16-bit integers;
</li><li><code class="code">v4i32</code>, a vector of four signed 32-bit integers;
</li><li><code class="code">v4u32</code>, a vector of four unsigned 32-bit integers;
</li><li><code class="code">v2i64</code>, a vector of two signed 64-bit integers;
</li><li><code class="code">v2u64</code>, a vector of two unsigned 64-bit integers;
</li><li><code class="code">v4f32</code>, a vector of four 32-bit floats;
</li><li><code class="code">v2f64</code>, a vector of two 64-bit doubles.
</li></ul>

<p>Instructions and corresponding built-ins may have additional restrictions and/or
input/output values manipulated:
</p><ul class="itemize mark-bullet">
<li><code class="code">imm0_1</code>, an integer literal in range 0 to 1;
</li><li><code class="code">imm0_3</code>, an integer literal in range 0 to 3;
</li><li><code class="code">imm0_7</code>, an integer literal in range 0 to 7;
</li><li><code class="code">imm0_15</code>, an integer literal in range 0 to 15;
</li><li><code class="code">imm0_31</code>, an integer literal in range 0 to 31;
</li><li><code class="code">imm0_63</code>, an integer literal in range 0 to 63;
</li><li><code class="code">imm0_255</code>, an integer literal in range 0 to 255;
</li><li><code class="code">imm_n16_15</code>, an integer literal in range -16 to 15;
</li><li><code class="code">imm_n512_511</code>, an integer literal in range -512 to 511;
</li><li><code class="code">imm_n1024_1022</code>, an integer literal in range -512 to 511 left
shifted by 1 bit, i.e., -1024, -1022, &hellip;, 1020, 1022;
</li><li><code class="code">imm_n2048_2044</code>, an integer literal in range -512 to 511 left
shifted by 2 bits, i.e., -2048, -2044, &hellip;, 2040, 2044;
</li><li><code class="code">imm_n4096_4088</code>, an integer literal in range -512 to 511 left
shifted by 3 bits, i.e., -4096, -4088, &hellip;, 4080, 4088;
</li><li><code class="code">imm1_4</code>, an integer literal in range 1 to 4;
</li><li><code class="code">i32, i64, u32, u64, f32, f64</code>, defined as follows:
</li></ul>

<div class="example smallexample">
<pre class="example-preformatted">{
typedef int i32;
#if __LONG_MAX__ == __LONG_LONG_MAX__
typedef long i64;
#else
typedef long long i64;
#endif

typedef unsigned int u32;
#if __LONG_MAX__ == __LONG_LONG_MAX__
typedef unsigned long u64;
#else
typedef unsigned long long u64;
#endif

typedef double f64;
typedef float f32;
}
</pre></div>

<ul class="mini-toc">
<li><a href="MIPS-SIMD-Architecture-Built_002din-Functions.html" accesskey="1">MIPS SIMD Architecture Built-in Functions</a></li>
</ul>
</div>
<hr>
<div class="nav-panel">
<p>
Next: <a href="Other-MIPS-Built_002din-Functions.html">Other MIPS Built-in Functions</a>, Previous: <a href="MIPS-Loongson-Built_002din-Functions.html">MIPS Loongson Built-in Functions</a>, Up: <a href="Target-Builtins.html">Built-in Functions Specific to Particular Target Machines</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Indices.html" title="Index" rel="index">Index</a>]</p>
</div>



</body>
</html>
